[Bug 200629] ether_type not set in ether header in mbuf for vlan packet

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=200629

            Bug ID: 200629
           Summary: ether_type not set in ether header in mbuf for vlan
                    packet
           Product: Base System
           Version: 10.0-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: praveenchoudary.gokina at avagotech.com

When I send a vlan packet, in driver, when we extract ether_type from
ether_header in mbuf, for vlan packets ether_type is not set to ETHERTYPE_VLAN.

To test, we can use Emulex Skyhawk adapter. In OCE Inbox driver, in
oce_tso_setup(), ether_type is not coming as ETHERTYPE_VLAN for vlan packets.

Below are the steps to create vlan interface
ifconfig oce0 up
ifconfig vlan0 create
ifconfig vlan0  vlan 4 vlandev oce0
ifconfig vlan0 40.4.4.98 up

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